True, but she most definitely used a filter on that picture and stretched her forehead out.
I think KT still uses filters to smooth her skin but the shape of her head is another thing. Her head looks stretched out because of distortion caused by a combination of the focal length of her phone’s camera and the distance between her face and her phone. Huh?
In a nutshell about focal lengths, short camera lenses with smaller focal lengths cause more distortion than long lenses. The selfie camera in your phone has a wide angle short lens. And remember wide angle lenses cause distortion. In the picture below the left was shot with a short lens, the right a long lens. Which looks more natural?
When you see things that are far away they look smaller. Closer objects appear larger. So when you are taking a selfie, how far is the camera's lens from your face? At most an arm’s length but it will probably be closer so that the shot focuses squarely on your face. Whatever part of your face that is closest to the lens will look larger to the camera. Features that are further away such as your ears will appear smaller.
In these selfies she's holding her phone pretty close to her face so her nose and eyes look ridiculously large. KT is also tilting her head down to move her chin away from the camera so it appears smaller. She already has a high forehead, it looks even larger because of the short lens distortion.
So yeah, she wants the world to think she looks like this:
But the reality is this...
Thanks for coming to my TED Talk.